Juergen Freund / Split-level photograph of coral reef shallows, Rowley Shoals, Western Australia

David Shale / Starfish (Asteroid) with sensory and locomotive hydraulic tube feet extended. Collected from coral sea mount near Dragon vent field on SW Indian Ridge, Indian Ocean.

David Shale / Starfish (Asteroid) with sensory and locomotive hydraulic tube feet extended. Collected from coral sea mount near Dragon vent field on SW Indian Ridge, Indian Ocean.

David Shale / Starfish (Asteroid) with sensory and locomotive hydraulic tube feet extended. Collected from coral sea mount near Dragon vent field on SW Indian Ridge, Indian Ocean.

David Shale / Starfish (Asteroid) with sensory and locomotive hydraulic tube feet extended. Collected from coral sea mount near Dragon vent field on SW Indian Ridge, Indian Ocean.

David Shale / Starfish (Asteroid) from coral seamount. Collected from coral sea mount near Dragon vent field on SW Indian Ridge, Indian Ocean.

David Shale / Deepsea Sea star / Starfish (Asteroidea) from coral seamount, Indian Ocean, November 2011

GEORGETTE DOUWMA / Large pin-cushion starfish (Culcita novaguinea) close-up, Andaman Sea, Thailand

Juergen Freund / Woman snorkeling watching life on a shallow reef with a Kimberley Escape boat in the background. Rowley Shoals, Western Australia

Juergen Freund / Woman snorkelling watching life on a shallow reef, Rowley Shoals, Western Australia

Juergen Freund / Woman snorkeling watching life on a shallow reef, Rowley Shoals, Western Australia

Jeff Rotman / Orange Starfish (Echinaster luzonicus) regenerating lost arms. West Australia, Indian Ocean.

Constantinos Petrinos / Large pincushion starfish {Culcita novaeguineae} Sulawesi, Indonesia

Constantinos Petrinos / Large pincushion starfish {Culcita novaeguineae} Sulawesi, Indonesia

Juergen Freund / Diver with Crown of thorns starfish {Acanthaster planci} Indo-Pacific ocean

Juergen Freund / Ringed pipefish on starfish (Doryramphus dactyliophorus) Indo Pacific

GEORGETTE DOUWMA / Coral reef with soft corals and starfish, Richelieux Rock, Andaman Sea, Thailand Indian Ocean

Sue Daly / Sea star {Choriaster granulatus} Bodgaya, Borneo, Indonesia

GEORGETTE DOUWMA / Harlequin shrimp {Hymenocera picta / elegans} with Starfish prey {Fromia monilis} turned upside down to prevent it from escaping, Andaman Sea, Thailand.

GEORGETTE DOUWMA / Harlequin shrimp {Hymenocera picta} with Starfish prey {Fromia monilis} Andaman Sea, Thailand.

GEORGETTE DOUWMA / Harlequin shrimp {Hymenocera picta} male and female with Starfish prey {Fromia monilis} Andaman Sea, Thailand.

Norbert Wu / Candy Cane Sea Star (Fromia monilis) on Acropora Coral, Seychelles, Indian Ocean

Fred Bavendam / Starfish (Fromia sp) portrait, on rock with algae, Maldive Islands

Norbert Wu / Candy Cane Sea Star (Fromia monilis) in Soft Coral tree, Seychelles

Norbert Wu / Crown-of-thorns Starfish (Acanthaster planci) feeds on and kills coral colony, Seychelles, Indian Ocean

Juergen Freund / Sea urchins and starfish at low tide {Diadema setosum} Indo Pacific. split level

GEORGETTE DOUWMA / Starfish {Fromia sp} on coral, Maldives, Indian Ocean

GEORGETTE DOUWMA / Starfish {Fromia sp} with only four legs, Maldives, Indian Ocean

GEORGETTE DOUWMA / Crown of Thorns starfish on coral-reef, Andaman Sea, Indian Ocean

GEORGETTE DOUWMA / Crown-of-Thorns starfish, Andaman Sea, Indian Ocean

Roberto Rinaldi / Man selling shells, corals and starfish at a stall in Mauritius.

Norbert Wu / Candy Cane Sea Star (Fromia monilis) underwater, Seychelles

GEORGETTE DOUWMA / Necklace seastar {Fromia monilis} Sulawesi, Indonesia

GEORGETTE DOUWMA / Crown of thorns starfish {Acanthaster planci} Andaman sea Thailand

Constantinos Petrinos / Harlequin shrimps {Hymenocera elegans} feed on starfish {Linckia laevigata} Philippines

Constantinos Petrinos / Harlequin shrimps {Hymenocera elegans} feed on starfish {Linckia laevigata} Philippines

Juergen Freund / Starfish {Fromia sp} reproduces by shedding limb and duplicating itself. Indo-pacific